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Integrals of harmonic functions over curves and surfaces

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Title: Integrals of harmonic functions over curves and surfaces
Author(s): Movshovich, Yevgenya E.
Doctoral Committee Chair(s): Miles, Joseph
Department / Program: Mathematics
Discipline: Mathematics
Degree Granting Institution: University of Illinois at Urbana-Champaign
Degree: Ph.D.
Genre: Dissertation
Subject(s): Mathematics
Abstract: This thesis explores a new approach, begun by Maurice Heins and Jang-Mei Wu, to studying the near-boundary behavior of positive solutions of elliptic DE's by finding surfaces which minimize the integrals of solutions over the family of all closed surfaces or curves tending to the boundary. The inferior limit of integrals over this family is estimated for harmonic functions given by the Cantors measures on the unit circle in terms of the porosity of the Cantor set. The exact lower bound of it for all normalized positive harmonic functions in the unit ball of $R\sp{n}$ is established. Also, its value for the functions given by the Dirac measure on the unit n-sphere is computed. The generalized formula of the surface area element in spherical coordinates for the dimension $n>3$ is derived.
Issue Date: 1995
Type: Text
Language: English
URI: http://hdl.handle.net/2142/19848
Rights Information: Copyright 1995 Movshovich, Yevgenya E.
Date Available in IDEALS: 2011-05-07
Identifier in Online Catalog: AAI9624443
OCLC Identifier: (UMI)AAI9624443
 

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